<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Posted by ajamieson:
EZY chooses principal airports in comparison to Ryanair, which for example flies to Hahn (for Frankfurt), Prestwick (for Glasgow), Charleroi (for Brussels) etc. This makes EZY one of the few low cost carriers I would be prepared to fly.</font>
Sorry, you are both right! I checked again and yes, Easyjet has choosen principal airports. And I was wrong regarding Easyjet flying to (Frankfurt) Hahn.
Website for checking low fares:
http://www.aerfares.net/v3/index.php